// 类

class Student {
    constructor(name,number) {
        this.name = name
        this.number = number
    }

    sayHi() {
        console.log(`姓名：${this.name},学号${this.number}`)
    }
}

// 使用new 声明 对象/ 实例
const xialuo = new Student('夏洛', 100)
console.log(xialuo.name)
console.log(xialuo.number)
xialuo.sayHi()